![Flowers spring 2020 Rogsn10](https://i.servimg.com/u/f34/19/54/74/50/rogsn10.jpg)
Mam. chionocephala Rog s.n. - Sierra Paila, Coah.
![Flowers spring 2020 Mh15-910](https://i.servimg.com/u/f34/19/54/74/50/mh15-910.jpg)
Mam. cobrensis MH 15/92 - Areponapuchii, Chih.
![Flowers spring 2020 Rog73310](https://i.servimg.com/u/f34/19/54/74/50/rog73310.jpg)
Mam. craigi (fa. Polanco) Rog 733 - 1.5 km e. Jesús María, Chih.
![Flowers spring 2020 Wm385110](https://i.servimg.com/u/f34/19/54/74/50/wm385110.jpg)
Mam. elongata var. echinaria WM 3851 - Presa Zimapán, Qro.
![Flowers spring 2020 Rep88310](https://i.servimg.com/u/f34/19/54/74/50/rep88310.jpg)
Mam. haageana Rep 883 - Azumbilla, Pue.
![Flowers spring 2020 Heyder10](https://i.servimg.com/u/f34/19/54/74/50/heyder10.jpg)
Mam. heyderi aff. Rog s.n.
![Flowers spring 2020 Lloydi10](https://i.servimg.com/u/f34/19/54/74/50/lloydi10.jpg)
Mam. lloydii ML 694 - Cañón de Yerbabuena, SLP
![Flowers spring 2020 Rep12510](https://i.servimg.com/u/f34/19/54/74/50/rep12510.jpg)
Mam. lloydii Rep 1250a – Yerbabuena, SLP
![Flowers spring 2020 Meiaca10](https://i.servimg.com/u/f34/19/54/74/50/meiaca10.jpg)
Mam. meiacantha (heyderi aff.) Rog 449 - NL-2, km 76.6, Doctor Arroyo, NL
![Flowers spring 2020 H_o_pa10](https://i.servimg.com/u/f34/19/54/74/50/h_o_pa10.jpg)
Mam. pachycylindrica H.O. 133/1 - Cuencamé, Dgo.
![Flowers spring 2020 Wthoco10](https://i.servimg.com/u/f34/19/54/74/50/wthoco10.jpg)
Mam. perezdelarosae WTH 615 - El Ocote to Tapias Viejas, Ags.
![Flowers spring 2020 Rep_vi10](https://i.servimg.com/u/f34/19/54/74/50/rep_vi10.jpg)
Mam. prolifera var. mexicana Rep 2271 - Villa Juarez, SLP
![Flowers spring 2020 Rog50710](https://i.servimg.com/u/f34/19/54/74/50/rog50710.jpg)
Mam. scrippsiana fma. Rog 507 - Jesús María - Las Canoas, Nay.